EP0153487A1 - Bedeckung - Google Patents
Bedeckung Download PDFInfo
- Publication number
- EP0153487A1 EP0153487A1 EP84116104A EP84116104A EP0153487A1 EP 0153487 A1 EP0153487 A1 EP 0153487A1 EP 84116104 A EP84116104 A EP 84116104A EP 84116104 A EP84116104 A EP 84116104A EP 0153487 A1 EP0153487 A1 EP 0153487A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cover
- shoulder
- axis
- combination according
- nut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000000463 material Substances 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 13
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 5
- 229920001169 thermoplastic Polymers 0.000 description 4
- 239000004416 thermosoftening plastic Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 210000002445 nipple Anatomy 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/14—Cap nuts; Nut caps or bolt caps
Definitions
- a combination comprising a first member having a male screw thread defining a rectilinear axis, a second member carried on the first member and defining an aperture through which the ' ftrst member extends and a cover which covers at least a part of one of said members, characterised in that the cover is mounted on the second member.
- the cover is preferably formed of a material having a stiffness similar to that of the material of which the second member is formed.
- the first and second members will be formed of a metal, in which case the cover also is preferably formed of, or formed mainly of, metal.
- the first and second members may be formed of steel, in which case the cover also is preferably formed of steel.
- the second member preferably has a shoulder facing in a direction generally along the axis and which restrains movement of the cover from the second member, the cover extending from the shoulder in an opposite direction along the axis.
- Preferred embodiments of the invention further comprise a sealing element formed of a material having a stiffness less than that of the material of which the second member is formed and interposed between respective parts of the cover and the second member.
- the sealing member may be formed of a polymeric material, for example a thermoplastic or an elastomer.
- the sealing member may be formed of a metal which is softer than a metal of which the second member is formed. The sealing element is conveniently seated in a groove adjacent to the shoulder on the second member.
- the second member is preferably of annular form, in which case the cover preferably has a circular cross-section in a plane which intersects the second member and is perpendicular to the axis.
- first member There may be on the first member a nut which is adjacent to the second member.
- the cover may cover the entire peripheral surface of the nut.
- the cover may also cover an end portion of the first member which protrudes from the nut at the side thereof remote from the second member.
- the cover is preferably a snap fit on the second member.
- the cover may have an internal lip which engages the shoulder on the second member to restrain movement of the cover from the second member and the form of one or both of the lip and shoulder may vary around the axis.
- the cover may have a shoulder which restrains movement of the cover relative to the second member, the shoulder facing in a direction along the axis.
- the shoulder may engage the second member or the sealing element or both.
- the lip may present towards the shoulder a surface which is inclined more steeply to the axis at one position than at a further position spaced around the axis from the one position.
- the assembly illustrated in Figures 1, 2 and 3 comprises a first member in the form of a stud 10 which is rectilinear and has a male screw thread extending along at least the entire part of its length which is shown in the drawing.
- a second member, II which is annular, and a nut 12.
- the stud protrudes from a component 13 of a structure, the components of which are to be held in assembled relation with one another by the stud, annulus I and nut 12.
- the detail of this structure forms no part of the present invention and will not be described.
- the stud 10 and nut 12 can be used in any situation where a stud and nut fasteningis appropriate and the stud and nut may be of known form.
- the annulus 11, nut 12 and component 13 define respective apertures through which the stud 10 extends. These apertures are circular and are centred substantially on the longitudinal axis 14 of the stud.
- the annulus I 1 is trapped between the nut 12 and the component 13.
- a circumferential groove 15 there is formed in the annulus I a circumferential groove 15.
- One axial boundary of this groove is defined by a shoulder 16 on the annulus which faces away from the nut 10 and preferably lies in a plane perpendicular to the axis 14.
- a sealing element in the form of an 0-ring 17 is seated in the groove 15.
- the assembly further includes a cover 18 which comprises a generally cylindrical peripheral wall 19 and an end wall 20 having a shape which approximates to a part of a sphere.
- the end wall 20 of the particular example of cover illustrated has at its centre a nipple 21, through which lubricant can be introduced into the space within the cover.
- the nipple may be substituted by a cap which permanently closes the opening in the end wall 20 of the cover.
- the end wall may be imperforate, in which case, in manufacture, the cover may be formed as an integral unit.
- the cover may also be formed by joining, for example by welding, a tubular part and an end cap.
- the end wall 20 and nipple 21 collectively cover a free end of the stud 10 and the side wall 19 of the cover extends over a part of the stud 10 which protrudes from the nut 12 in a direction away from the annulus I and component 13.
- the side wall of the cover also extends over the peripheral surfaces of the nut 12 and over at least a part of the periphery of the annulus 11.
- An end of the cover remote from the end wall 20 is closed by the annulus I and 0-ring 17. It will be noted that there is a clearance between the cover 18 and the stud 10. The same cover can approach closely to the component 13 when used to cover protruding stud end portions having different lengths.
- the cover 18 Adjacent to its end opposite to the end wall 20, the cover 18 is formed with a radially inwardly projecting lip 22 which presents internally of the cover opposite shoulders 23 and 24.
- the shoulder 23 faces generally in a direction towards the end wall 20.
- the shoulder 23 is inclined at a relatively large angle, for example an angle within the range 60° to 90°, to the axis 14.
- the shoulder 24 is inclined to the axis 14 at a smaller angle, typically within the range 20° to 45°.
- the shoulder 23 on the lip 22 overlaps the shoulder 16 on the annulus I to restrain withdrawal of the cover from the annulus.
- the lip 22 extends into the groove 15 to engage the 0-ring 17.
- the shoulder 24 engages the 0-ring.
- a free end portion 25 of the cover has a diameter substantially greater than that of the annulus 11, so that the free end portion can easily be positioned around the annulus. If force is then applied to the cover in a direction along the axis 14 towards the component 13, the cover will be stressed and expanded somewhat so that the lip 22 can pass onto the annulus and snap into the groove 15, whereupon the stress in the cover is at least partly relieved.
- the shoulder 23 may be inclined to the axis 14 at a smaller angle at one position around the axis than at other positions around the axis.
- the extent of the arc over which the shoulder 23 is less steeply inclined to the axis and the angle at which the shoulder is inclined within this arc are selected according to the required compromise between ease of removal of the cover and avoidance of inadvertent dislodging of the cover.
- the arc may subtend at the axis 14 an angle of 90°.
- the angle of inclination of the shoulder to the axis within this arc may be within the range 25° to 65°.
- the inclination of the shoulder 23 to the axis 14 over the major part of the periphery of the cover is represented by the inclination of the line 26 to the axis.
- the inclination of the shoulder 23 over a minor proportion of the circumference of the cover to the axis is represented by the inclination of the line 27 to the axis.
- FIG. 4 A first further arrangement is illustrated in Figure 4.
- the assembly of Figure 4 comprises components corresponding to all of those represented in Figures 2 and 3 and each of these components is identical with those of the example shown in Figures 2 and 3, with the exception of the annulus indicated by the reference numeral I I in Figure 4.
- This annulus has, over a minor part of its circumference, a chamfer 128 between the shoulder 116 and the peripheral surface of the annulus.
- This shoulder faces towards the lip of the cover and the chamfer facilitates dislodgement of the cover from the annulus by means of a blow applied to the side wall of the cover near to the end wall.
- FIG. 5 A second further arrangement is illustrated in Figure 5. Certain parts shown in Figure 5 are identical with parts shown in Figures I and 2. In Figure 5, such corresponding parts are identified by like reference numerals with the prefix 5 and the preceding description is deemed to apply, except for differences hereinafter mentioned.
- the cover 518 need not have a radially inwardly projecting lip, but does have a shoulder 223 which engages the O-ring 517. The shoulder faces in a direction along the axis 514 away from the structure 513.
- a surface faces along the axis if a perpendicular to that surface has a component along the axis.
- the stud 10, annulus 11 or 111, nut 12 and cover 18 will generally all be formed of steel.
- the preferred material for the cover is stainless steel. Other corrosion-resistant metals may be used. However, it is preferred that the material of which the cover is formed has a stiffness similar to that of which the annulus 11 is formed.
- the annulus is subjected to compression between the nut 12 and component 13 and is required to transmit a substantial axial force between the nut and component 13.
- There is selected for the annulus 11 a material which is capable of withstanding the intended load without significant permanent deformation. In many cases, plastics, particularly thermoplastics, will be unsuitable materials for the annulus 11.
- the 0-ring 24 may be formed of a thermoplastic, for example p.t.f.e. or of an elastomer. We prefer that the 0-ring should be resiliently deformable under the load exerted by the lip 22. Alternatively, there may be substituted for the 0-ring a sealing element formed of somewhat less resilient material.
- the sealing element may be formed of a metal, in which case the metal selected is preferably one having a lower stiffness than does the metal of which the cover 18 is formed.
- the sealing element may be formed with an edge adapted to engage the lip 22 substantially in line contact, rather than face-to-face contact.
- shoulder 16 Whilst we prefer to form the shoulder 16 on an annulus which is formed separately from the nut 12, it would be within the scope of the invention for a shoulder corresponding to the shoulder 16 to be formed on the nut and for the cover to engage this shoulder. There may be used in the assembly a nut having on one end portion flats for co-operation with a spanner and in an opposite end portion a peripheral groove for receiving the lip 22 of the cover and a sealing element.
- a separately formed annulus is mounted on a nut prior to assembly of the nut with the stud.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8402197 | 1984-01-27 | ||
GB848402197A GB8402197D0 (en) | 1984-01-27 | 1984-01-27 | Cover |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0153487A1 true EP0153487A1 (de) | 1985-09-04 |
Family
ID=10555645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84116104A Withdrawn EP0153487A1 (de) | 1984-01-27 | 1984-12-21 | Bedeckung |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0153487A1 (de) |
GB (1) | GB8402197D0 (de) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4883399A (en) * | 1988-12-05 | 1989-11-28 | Maclean-Fogg Company | Plastic encapsulated nut and washer assembly |
GB2220244A (en) * | 1988-06-29 | 1990-01-04 | Lawrence Dartnell | Protective covers for bolt heads, threads and nuts |
US4897008A (en) * | 1988-10-17 | 1990-01-30 | Mcgard, Inc. | Anti-tamper nut |
EP0265132B1 (de) * | 1986-10-11 | 1991-07-17 | Steelpress Limited | Schraubenabdeckung |
US5120174A (en) * | 1991-03-18 | 1992-06-09 | Wheel Masters Inc. | Torque loss indicator |
EP0540434A1 (de) * | 1991-10-31 | 1993-05-05 | CROUZET Automatismes | Schutzmutter für Betätigungsknopf |
US5360304A (en) * | 1993-05-11 | 1994-11-01 | Mcgard, Inc. | Fastener construction |
WO1995023926A1 (de) * | 1994-03-02 | 1995-09-08 | Muellenberg Ralph | Spannanordnung mit einem konusspannbolzen |
AT400475B (de) * | 1993-09-30 | 1996-01-25 | Kreutzinger Johann | Verbindungsorgan |
US6036420A (en) * | 1999-09-21 | 2000-03-14 | Horizon Technology, Llp | Capped wheel nut assembly |
US6135691A (en) * | 1996-02-09 | 2000-10-24 | Romilly International Ltd. | Protective caps for bolts with nuts |
EP1412646A2 (de) * | 2000-10-10 | 2004-04-28 | Industrial and Automotive Fasteners, L.L.C | Mit muttern/kappen-anordnung integrale stahlunterlegscheibe |
WO2009063063A1 (en) * | 2007-11-15 | 2009-05-22 | Airbus España S.L. | Protection device against electrical discharges in fixing elements with high charges |
US8011866B2 (en) | 2001-08-20 | 2011-09-06 | Maclean-Fogg Company | Locking fastener assembly |
WO2012107741A1 (en) * | 2011-02-10 | 2012-08-16 | Airbus Operations Limited | Cap for forming sealed cavity around fastener |
WO2012177592A2 (en) * | 2011-06-20 | 2012-12-27 | Caterpillar Inc. | Cover for a stud and nut assembly |
IT201800006324A1 (it) * | 2018-06-14 | 2019-12-14 | Dispositivo anti-manomissione | |
US10539173B2 (en) | 2013-04-22 | 2020-01-21 | Prc-De-Soto International, Inc. | Sealant caps including internal barrier rings |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB523202A (en) * | 1938-12-28 | 1940-07-09 | Chivers & Sons Ltd | Improvements in or relating to containers, particularly for foodstuffs, and to closure devices for such containers |
CH342799A (fr) * | 1957-04-03 | 1959-11-30 | Evard Gilbert | Ecrou à denture et sa clé de serrage |
US3905411A (en) * | 1974-05-29 | 1975-09-16 | Dzus Fasterer Co Inc | Fastener receptacle with protective cap |
US4295766A (en) * | 1978-07-27 | 1981-10-20 | Francis Shaw | Self-aligning dome nut |
-
1984
- 1984-01-27 GB GB848402197A patent/GB8402197D0/en active Pending
- 1984-12-21 EP EP84116104A patent/EP0153487A1/de not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB523202A (en) * | 1938-12-28 | 1940-07-09 | Chivers & Sons Ltd | Improvements in or relating to containers, particularly for foodstuffs, and to closure devices for such containers |
CH342799A (fr) * | 1957-04-03 | 1959-11-30 | Evard Gilbert | Ecrou à denture et sa clé de serrage |
US3905411A (en) * | 1974-05-29 | 1975-09-16 | Dzus Fasterer Co Inc | Fastener receptacle with protective cap |
US4295766A (en) * | 1978-07-27 | 1981-10-20 | Francis Shaw | Self-aligning dome nut |
Cited By (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0265132B1 (de) * | 1986-10-11 | 1991-07-17 | Steelpress Limited | Schraubenabdeckung |
GB2220244A (en) * | 1988-06-29 | 1990-01-04 | Lawrence Dartnell | Protective covers for bolt heads, threads and nuts |
US4897008A (en) * | 1988-10-17 | 1990-01-30 | Mcgard, Inc. | Anti-tamper nut |
US4883399A (en) * | 1988-12-05 | 1989-11-28 | Maclean-Fogg Company | Plastic encapsulated nut and washer assembly |
US5120174A (en) * | 1991-03-18 | 1992-06-09 | Wheel Masters Inc. | Torque loss indicator |
FR2683276A1 (fr) * | 1991-10-31 | 1993-05-07 | Sextant Avionique | Ecrou protecteur de bouton d'actionnement. |
EP0540434A1 (de) * | 1991-10-31 | 1993-05-05 | CROUZET Automatismes | Schutzmutter für Betätigungsknopf |
US5308206A (en) * | 1991-10-31 | 1994-05-03 | Crouzet Automatismes | Protection nut for a push button |
US5360304A (en) * | 1993-05-11 | 1994-11-01 | Mcgard, Inc. | Fastener construction |
AT400475B (de) * | 1993-09-30 | 1996-01-25 | Kreutzinger Johann | Verbindungsorgan |
WO1995023926A1 (de) * | 1994-03-02 | 1995-09-08 | Muellenberg Ralph | Spannanordnung mit einem konusspannbolzen |
US5775831A (en) * | 1994-03-02 | 1998-07-07 | Mullenberg; Ralph | Connected component assembly having conical clamping sleves |
US6135691A (en) * | 1996-02-09 | 2000-10-24 | Romilly International Ltd. | Protective caps for bolts with nuts |
US6036420A (en) * | 1999-09-21 | 2000-03-14 | Horizon Technology, Llp | Capped wheel nut assembly |
CZ298752B6 (cs) * | 2000-10-10 | 2008-01-16 | Industrial And Automotive Fasteners Llc | Sestava matice a podložky kola |
EP1412646A4 (de) * | 2000-10-10 | 2006-04-19 | Ind And Automotive Fasteners L | Mit muttern/kappen-anordnung integrale stahlunterlegscheibe |
EP1412646A2 (de) * | 2000-10-10 | 2004-04-28 | Industrial and Automotive Fasteners, L.L.C | Mit muttern/kappen-anordnung integrale stahlunterlegscheibe |
US8011866B2 (en) | 2001-08-20 | 2011-09-06 | Maclean-Fogg Company | Locking fastener assembly |
WO2009063063A1 (en) * | 2007-11-15 | 2009-05-22 | Airbus España S.L. | Protection device against electrical discharges in fixing elements with high charges |
ES2342641A1 (es) * | 2007-11-15 | 2010-07-09 | Airbus España S.L. | Dispositivo de proteccion contra descargas electricas en elementos de fijacion con carga elevada. |
US9228604B2 (en) | 2011-02-10 | 2016-01-05 | Airbus Operations Limited | Cap for forming sealed cavity around fastener |
WO2012107741A1 (en) * | 2011-02-10 | 2012-08-16 | Airbus Operations Limited | Cap for forming sealed cavity around fastener |
US9506493B2 (en) | 2011-02-10 | 2016-11-29 | Airbus Operations Limited | Cap for forming sealed cavity around fastener |
EP3366593A1 (de) * | 2011-02-10 | 2018-08-29 | Airbus Operations Limited | Kappe zur formung eines versiegelten hohlraums um ein befestigungsmittel |
WO2012177592A2 (en) * | 2011-06-20 | 2012-12-27 | Caterpillar Inc. | Cover for a stud and nut assembly |
WO2012177592A3 (en) * | 2011-06-20 | 2013-03-28 | Caterpillar Inc. | Cover for a stud and nut assembly |
US10539173B2 (en) | 2013-04-22 | 2020-01-21 | Prc-De-Soto International, Inc. | Sealant caps including internal barrier rings |
IT201800006324A1 (it) * | 2018-06-14 | 2019-12-14 | Dispositivo anti-manomissione | |
EP3581814A1 (de) * | 2018-06-14 | 2019-12-18 | Lombardini S.r.l. | Manipulationsschutzvorrichtung |
CN110608090A (zh) * | 2018-06-14 | 2019-12-24 | 隆巴第尼有限责任公司 | 防篡改装置 |
US11060553B2 (en) | 2018-06-14 | 2021-07-13 | Kohler Co. | Anti-tampering device |
CN110608090B (zh) * | 2018-06-14 | 2022-05-03 | 隆巴第尼有限责任公司 | 防篡改装置 |
Also Published As
Publication number | Publication date |
---|---|
GB8402197D0 (en) | 1984-02-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): DE FR GB IT NL |
|
17P | Request for examination filed |
Effective date: 19860221 |
|
17Q | First examination report despatched |
Effective date: 19861007 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19870630 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: HIRST, JOHN ANDREW BRIAN |